Teacher&#39;s aid



FIG. 1 is a front perspective view showing my new design;

FIG. 2 is a right end view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a left end view thereof;

FIG. 5 is a rear view thereof; and,

FIG. 6 is a top view thereof.

The broken line showing of a geometric object is for illustration purposes only and forms no part of the claimed design. 

I claim the ornamental design for a teacher's aid, as shown and described. 